Oberramsern

Aetigkofen is a former municipality in the district of Bucheggberg in the canton of Solothurn in Switzerland. On 1 January 2014 the former municipalities of Aetigkofen, Tscheppach, Brügglen, Aetingen, Bibern (SO), Gossliwil, Hessigkofen, Mühledorf (SO), Küttigkofen, Kyburg-Buchegg merged into the new municipality of Buchegg.

Bucheggberg District is one of the ten districts of the canton of Solothurn in Switzerland, situated to the southwest of the canton. Together with the Wasseramt District, it forms the Amtei (electoral district) of Wasseramt-Bucheggberg. It has a population of 8,009 (as of 31 December 2020).

Unterramsern is a municipality in the district of Bucheggberg, in the canton of Solothurn, Switzerland.

Mühledorf is a former municipality in the Bucheggberg District, in the canton of Solothurn, Switzerland. On 1 January 2014 the former municipalities of Mühledorf (SO), Tscheppach, Brügglen, Aetingen, Aetigkofen, Bibern (SO), Gossliwil, Hessigkofen, Küttigkofen, Kyburg-Buchegg merged into the new municipality of Buchegg.

Mülchi is a former municipality in the Bern-Mittelland administrative district in the canton of Bern in Switzerland. On 1 January 2014 the former municipalities of Mülchi, Büren zum Hof, Etzelkofen, Grafenried, Limpach, Schalunen and Zauggenried merged into the municipality of Fraubrunnen.

Messen is a municipality in the district of Bucheggberg, in the canton of Solothurn, Switzerland. On 1 January 2010 the municipalities of Balm bei Messen, Brunnenthal and Oberramsern merged into the municipality of Messen.

Hessigkofen is a former municipality in the district of Bucheggberg, in the canton of Solothurn, Switzerland. On 1 January 2014 the former municipalities of Hessigkofen, Tscheppach, Brügglen, Aetingen, Aetigkofen, Bibern (SO), Gossliwil, Mühledorf (SO), Küttigkofen, Kyburg-Buchegg merged into the new municipality of Buchegg.

Bibern is a former municipality in the district of Bucheggberg, in the canton of Solothurn, Switzerland. On 1 January 2014 the former municipalities of Bibern (SO), Tscheppach, Brügglen, Aetingen, Aetigkofen, Gossliwil, Hessigkofen, Mühledorf (SO), Küttigkofen, Kyburg-Buchegg merged into the new municipality of Buchegg.

Limpach is a former municipality in the Bern-Mittelland administrative district in the canton of Bern in Switzerland. On 1 January 2014 the former municipalities of Limpach, Büren zum Hof, Etzelkofen, Grafenried, Mülchi, Schalunen and Zauggenried merged into the municipality of Fraubrunnen.

Lüterswil-Gächliwil is a former municipality in the district of Bucheggberg, in the canton of Solothurn, Switzerland. It was formed in 1994 from the merger of the two previously independent municipalities of Lüterswil and Gächliwil. On 1 January 2024 the former municipality of Lüterswil-Gächliwil merged into the municipality of Buchegg.

Brunnenthal was a municipality in the district of Bucheggberg, in the canton of Solothurn, Switzerland. On 1 January 2010 the municipalities of Balm bei Messen, Brunnenthal and Oberramsern merged into the municipality of Messen.

Tscheppach is a former municipality in the district of Bucheggberg, in the canton of Solothurn, Switzerland. On 1 January 2014 the former municipalities of Tscheppach, Brügglen, Aetingen, Aetigkofen, Bibern (SO), Gossliwil, Hessigkofen, Mühledorf (SO), Küttigkofen, Kyburg-Buchegg merged into the new municipality of Buchegg.